PrimeWire

You can now watch the entire The Secret Genius of Modern Life Season 1 Episode 5 movie online in high-definition quality, complete with English subtitles for a better viewing experience. Best of all, there’s no need to download anything—simply stream it directly from your device anytime, anywhere.

With around a third of the population now owning fitness trackers, Britain has become a nation obsessed with tracking its every move.Hannah Fry finds out how 1970s car crashes helped us to count our steps, why high-altitude WWII dog-fights led to a crucial health monitor and how fitness trackers are even being used to catch killers.